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Iowa State Teachers College Program Of Recitations, Winter 1926-27, Iowa State Teachers College
Iowa State Teachers College Program Of Recitations, Winter 1926-27, Iowa State Teachers College
UNI Schedule of Classes
A listing and schedule of the courses being taught as well as policies and procedures concerning attending classes at the Iowa State Teachers College.
Article On The October Midland
The Alumni News Letter, V11n1, January 1, 1927, Iowa State Teachers College
The Alumni News Letter, V11n1, January 1, 1927, Iowa State Teachers College
The Alumni News Letter
Contains news of the College and its alumni.
In Memoriam: Charles Nutting; Leroy Titus Weeks; Edna M. Carter, L. H. Pammel, Guy West Wilson
In Memoriam: Charles Nutting; Leroy Titus Weeks; Edna M. Carter, L. H. Pammel, Guy West Wilson
Proceedings of the Iowa Academy of Science
No abstract provided.
Specific Infectious Pyelonephritis Of Cows, C. D. Rice
Specific Infectious Pyelonephritis Of Cows, C. D. Rice
Proceedings of the Iowa Academy of Science
In the last three years, five cases of pyelonephritis in the cow have been attended by the clinic staff. Several cases were reported from Humboldt County. This disease is reported as being quite common in European countries. The writer has had the opportunity to make bacteriological examination in two of the above mentioned cases and one case in the pig.
The Digestion Of Pectin And Methylated Glucoses By Various Organisms, Harold W. Coles
The Digestion Of Pectin And Methylated Glucoses By Various Organisms, Harold W. Coles
Proceedings of the Iowa Academy of Science
3-monomethyl glucose (I), 1, 2, 3, 5-tetramethyl glucose (II), and 1, 2, 3, 5, 6-pentamethyl glucose (III) were prepared, and, together with pectin, tried out on 185 cultures including organisms isolated from the activated sludge of creamery wastes and members of the colon-typhoid group. A peptone medium was used and a synthetic medium containing no peptone and hence no carbon other than the carbon of the pectin or carbohydrates. The organisms digesting pectin and (I) with the production of acid and gas were those commonly associated with the soil. (II) and (III) were not digested by any of the organisms …
Davenport's Deep Well, J. M. Lindly
Davenport's Deep Well, J. M. Lindly
Proceedings of the Iowa Academy of Science
In 1922, a deep well was drilled for the City of Davenport by the McCarthy Well Company of St. Paul, Minnesota. The log of the well was a follows.
Outcrop Of Cretaceous Sandstone In Cherokee County, E. J. Cable
Outcrop Of Cretaceous Sandstone In Cherokee County, E. J. Cable
Proceedings of the Iowa Academy of Science
The Cretaceous system in Iowa is composed of shales, argillaceous limestones and sandstone, and argillaceous sandstones. The former are generally referred to the Fort Benton horizon of the Colorado, while the latter are placed with the Dakota.
The Relation Between The Photoelectric And The Photographic Effect In Silver Bromide, L. W. Butler
The Relation Between The Photoelectric And The Photographic Effect In Silver Bromide, L. W. Butler
Proceedings of the Iowa Academy of Science
Toy, Edgerton, and Vick have recently shown that the photoelectric effect in silver bromide is due to ultraviolet light of wavelength less than λ 2800A. Since the photographic effect extends to λ 5000A they concluded that there is no relation between the photoelectric and the photographic effects in silver bromide. Before this article appeared, the writer had obtained approximately the same result with silver bromide formed by fuming the surface of a silver plate. Our data was obtained by the use of more sensitive apparatus than that employed by the above named investigators. In order to prevent deterioration of …
A Spectrophotometric Method Of Studying Hemoglobin And Other Colored Substances In Solution, George E. Davis
A Spectrophotometric Method Of Studying Hemoglobin And Other Colored Substances In Solution, George E. Davis
Proceedings of the Iowa Academy of Science
An investigation was carried out to determine the possibilities of applying spectrophotometric methods to the problem of estimating the concentration of hemoglobin in blood. The concentration of a substance in solution can easily be determined from its transmission of some particular wave length, providing the absorption ratio for that wave length is known. A late model direct reading spectrophotometer was used. The method was found to be fairly accurate and simple and should prove valuable in other physical investigations involving the study of spectral transmission curves of various colored substances. Some interesting irregularities in the shape of the spectral transmission …
Experiments On The Prevention And Relief Of Parathyroid Tetany, W. F. Wenner
Experiments On The Prevention And Relief Of Parathyroid Tetany, W. F. Wenner
Proceedings of the Iowa Academy of Science
Parathyroidectomized dogs given a five per cent solution of ammonium chloride in 100-cc. doses twice daily may be kept free from tetany for long periods. Once tetany appears, and the serum calcium falls below 7 mgm. per 100 cc., ammonium chloride brings about a recovery within two hours after administration. Calcium determinations show that the calcium has risen, on the average, 2.5 mgm. or to 8.5 mgm., which is above the level at which tetany appears.
The Metabolic Rates Of Amblystoma Larvae, O. M. Helff
The Metabolic Rates Of Amblystoma Larvae, O. M. Helff
Proceedings of the Iowa Academy of Science
The oxygen consumption per gram weight, four hours, of five species of Amblystoma larvae was determined by means of the Winkler method and distinct species variations found to exist.
Sulphate Retention Following Bilateral Adrenal Extirpation, W. W. Swingle, W. F. Wenner
Sulphate Retention Following Bilateral Adrenal Extirpation, W. W. Swingle, W. F. Wenner
Proceedings of the Iowa Academy of Science
Previous experiments by the senior writer have clearly shown that the cause of death following adrenal removal is an acid intoxication probably due to phosphoric and unknown organic acids. In the absence of the hormone of the adrenal cortex, the kidney fails to function properly with the result that marked acid and nitrogen retention occurs. In our previous work on the acid-base equilibrium the acid values of the serum protein, bicarbonate, chloride, and phosphorus were calculated. Total acid was taken as the sum of all the determined acids. Organic acid was calculated by subtracting total acid from total base and …
The Adaptation And Modification Of Rhizobium Leguminosarum To Certain Adverse Conditions, L. A. Burkey
The Adaptation And Modification Of Rhizobium Leguminosarum To Certain Adverse Conditions, L. A. Burkey
Proceedings of the Iowa Academy of Science
A study was made of the effects of desiccation and alkalinity on the growth of the alfalfa root nodule bacteria. A similar study was reported, on the effects of gentian violet, in a previous paper (Burke & Burkey, Soil Science, 1925). In this paper it was shown that continued exposure of the organisms to the dye resulted in more resistance, which was only temporary. Later work has shown the formation of bacteroid forms when the alfalfa organism is grown on dye agar or on medium which is very acid or extremely alkaline.
Nitrogen Trichloride With Benzalacetophenone, G. H. Coleman, David Craig
Nitrogen Trichloride With Benzalacetophenone, G. H. Coleman, David Craig
Proceedings of the Iowa Academy of Science
Nitrogen trichloride and benzalacetophenone in carbon tetrachloride solution between 20° and -15 ° react to form free nitrogen, ammonium chloride, benzalacetophenone dichloride, and a C-chloro-N -dichloroamino ketone. This compound can be reduced to the C-chloroamino ketone by means of concentrated hydrochloric acid. The hydrochloride and the benzoyl derivative of this compound were isolated and analyzed.
Test Of A U-Tube Capillary Viscometer, Leroy D. Weld
Test Of A U-Tube Capillary Viscometer, Leroy D. Weld
Proceedings of the Iowa Academy of Science
The usual form of Poiseuille's equation for the flow of a viscous liquid through a capillary tube is not difficult to deduce mathematically upon the basis of certain assumptions. These are: (1) that there is no appreciable slip at the inner surface of the capillary, that is, that at this distance from the axis the speed of flow is zero; (2) that the flow is steady, so that inertia plays no part in it; (3) that the capillary is perfectly cylindrical and perfectly straight, and (4) that there are no end effects, such as surface tension and eddies.
The Photographic Action Of Irradiated Cod-Liver Oil, Jay W. Woodrow, G. M. Wissink
The Photographic Action Of Irradiated Cod-Liver Oil, Jay W. Woodrow, G. M. Wissink
Proceedings of the Iowa Academy of Science
We have previously reported the results of experiments on the photographic action of irradiated oils. This paper gives the results obtained with various arrangements of the screens and the receptacles for the irradiated cod-liver oil.
The Effect Of Ultaviolet Light On The Dielectric Properties Of Crystals, Albert A. Aardal
The Effect Of Ultaviolet Light On The Dielectric Properties Of Crystals, Albert A. Aardal
Proceedings of the Iowa Academy of Science
Measurements have been made on the dielectric properties of some of the natural crystals, and it has been shown that the values of the constants are changed upon exposure to ultraviolet light. The most important of these properties are dielectric constant, phase angle, and resistance, all of which show this variation when exposed to the short wave-lengths.
A Substitute For Beerwort As A Yeast Medium In The Bacteriology Laboratory, John C. Weldin
A Substitute For Beerwort As A Yeast Medium In The Bacteriology Laboratory, John C. Weldin
Proceedings of the Iowa Academy of Science
Ordinary beerwort, the usual medium in the past for yeast culture in Bacteriology laboratories, has become increasingly difficult to obtain. The manufacture of beerwort in the laboratory is a tedious process and the product is variable and often unsatisfactory for good yeast growth.
1927 Old Gold, Iowa State Teachers College
1927 Old Gold, Iowa State Teachers College
UNI Yearbooks
The student yearbook of the Iowa State Teachers College, later known as the University of Northern Iowa.
The Use Of Sodium Taurocholate And Crystal Violet In The Isolation Of Bact. Tumefaciens Sm. & Town., M. K. Patel
The Use Of Sodium Taurocholate And Crystal Violet In The Isolation Of Bact. Tumefaciens Sm. & Town., M. K. Patel
Proceedings of the Iowa Academy of Science
In the isolation of Bacterium tumefaciens from overgrowths on apple, one of the greatest sources of contamination is that of soil organisms. These are lodged in the soil within the crevices of the convoluted gall surface. In addition the crown gall organisms frequently occur in only small numbers, making it necessary to use large amounts of tissue for isolation purposes.
Influence Of Bile And Brilliant Green On Rate Of Growth Of Colon Bacilli, Harold W. Coles, Max Levine
Influence Of Bile And Brilliant Green On Rate Of Growth Of Colon Bacilli, Harold W. Coles, Max Levine
Proceedings of the Iowa Academy of Science
Evaporated bile may inhibit or stimulate growth of colon bacilli depending on concentration of bile, reaction of the medium, and the strain of organism employed. With all samples of bile employed, a concentration of 2.0% was found to accelerate growth whereas 5.0% was inhibitory in acid media (about pH 6.0), and stimulating in alkaline media (pH 7.3-7.8).
Some Observations On The Germicidal Efficiencies Of Alkalies, Max Levine, J. H. Buchanan, Grace Lease, E. E. Peterson
Some Observations On The Germicidal Efficiencies Of Alkalies, Max Levine, J. H. Buchanan, Grace Lease, E. E. Peterson
Proceedings of the Iowa Academy of Science
A technique is described for measuring the relative germicidal efficiencies of strong alakalies. For a given alkali, the germicidal efficiency increases with decreasing H +ion concentration, but the H +ion concentration is not suitable as an index of the germicidal powers of different alkalies. The addition of various salts to sodium hydroxide increased the germicidal effects of the alkali.
A Derivation Of The Solubility Product Law, Warren C. Vosburgh
A Derivation Of The Solubility Product Law, Warren C. Vosburgh
Proceedings of the Iowa Academy of Science
Stieglitz1 pointed out in 1908 that the derivation of the solubility product law based on the application of the law of mass action to strong electrolytes is objectionable. Nevertheless many elementary textbooks still give it. Washburn2 later gave a satisfactory thermodynamic derivation, and Butler3 has more recently given a satisfactory statistical one. Another thermodynamic derivation is possible using the now familiar concepts of free energy and activity.
The Rate Of Solution Of Zn In H2So4 Under Pressures Up To 347 Atmospheres, Thos. C. Poulter, Glen E. Frazer
The Rate Of Solution Of Zn In H2So4 Under Pressures Up To 347 Atmospheres, Thos. C. Poulter, Glen E. Frazer
Proceedings of the Iowa Academy of Science
A study is made of the factors influencing the rare of solution of Zn in H2SO4. The conditions of the surface, the local concentration of the acid at the surface of the Zn, and the size and shape of the pieces of Zn are found to be very important factors while pressures up to 347 atmospheres have very little direct influence upon the rate of reaction. The pressure cell used for this work was exhibited.
New Halogenated Derivatives Of Vanillin, L. Chas. Raiford, W. C. Stoesser
New Halogenated Derivatives Of Vanillin, L. Chas. Raiford, W. C. Stoesser
Proceedings of the Iowa Academy of Science
Carles [Bull. Soc., Chim., 17, 14 (1872)] prepared a monoiodovanillin in 1872, but did not prove its structure. Tiemann and Haarmann [Ber., 7, 615 (1874)] obtained a monobromo derivative that was shown by Dakin [Am. Chem. J., 42, 473 (1909)] to have the halogen in position 5 (CHO = 1). Peratoner [ Gazz. Chim. Ital., 28 (1) 235 (1898)] reported a monochloro compound in which the halogen was not oriented, but which may be a 5-derivative. The only dihalogenated vanillin on record is a diiodo compound obtained by Carles, for which no melting point was given, no derivatives prepared, …
Organo-Lead Compounds In The Treatment Of Cancer, Henry Gilman, Jack Robinson
Organo-Lead Compounds In The Treatment Of Cancer, Henry Gilman, Jack Robinson
Proceedings of the Iowa Academy of Science
New organo-lead compounds have been prepared by means of the Grignard reagent. These compounds are being tested in cancer studies, as anti-knock agents, and as reagents to combat some plant diseases. Grignard reagents are being prepared from tetra-p-bromophenyl-lead, diphenyl-di-p-bromophenyl-lead, and halogeno- alkyl lead types by reaction with the special magnesium-copper alloy using mercuric salts as catalysts. Solubilizing groups like dialkylamino, diethyl-aminoethyl, and various carboxylic acid groups are being attached to the R groups which in turn are attached to lead. For allied purposes the same types are being prepared where the lead has been replaced by tin, antimony, selenium and …
The Correlation Between Students' Grades In High School And College Physics, Chester King, John Leist
The Correlation Between Students' Grades In High School And College Physics, Chester King, John Leist
Proceedings of the Iowa Academy of Science
This study was undertaken in order to find out to what extent the achievement of a student in college Physics was similar to his achievement in high school Physics. The high school grades for the entire course of Physics were used in comparison to the first semester grades in college Physics. The data covers the records of students who entered college during a period of three years. The total number of students considered was one hundred twenty-one. With this group the formula proposed by Karl Pearson showed the coefficient of correlation to be 0.62. This is considered quite a marked …
An Objective Approach To The Study Of Certain Emotions, Emily Patterson
An Objective Approach To The Study Of Certain Emotions, Emily Patterson
Proceedings of the Iowa Academy of Science
Last year a qualitative and quantitative study of the emotions was made, emphasizing those of fear and startle. On theoretical grounds the emotion which seemed naturally to follow these was surprise, for often the emotion of surprise was closely allied in the introspective reports and in the technical procedure of arousing the several emotions. In the literature little is said about surprise. Almost always it is described as a comparatively mild emotion. Watson does not mention it among his primary emotions and few other authors consider it among the important emotions. In popular literature, however, the word is frequently found …
A Second Intensive Ornithological Survey Of A Typical Square Mile Of Cultivated Prairie, After A Ten Year Interval, Chas. J. Spiker
A Second Intensive Ornithological Survey Of A Typical Square Mile Of Cultivated Prairie, After A Ten Year Interval, Chas. J. Spiker
Proceedings of the Iowa Academy of Science
This paper presents a report of a second intensive ornithological survey over a square mile of cultivated prairie. The first survey was made on July 25 and 26, 1916, by Dr. Arthur R. Abel, who was at that time a student in Morningside College, Sioux City, Iowa. The report of this survey was published in the Proceedings of the Iowa Academy of Science, Vol. XXVII, 1920, pages 385 to 393 inclusive. It was thought that a repeated survey over the same ground after an interval of ten years, would be both interesting and important. It was not possible for the …